Self-hostable open-source Confluence alternatives
Corporate wiki. Self-host options are lighter, cheaper, and keep internal docs off third-party servers.
Among 3 self-hostable open-source Confluence alternatives tracked here, Outline currently leads on the Self-Host Health Score (97/100, 39k★, last commit today). For a Raspberry Pi or a low-RAM VPS, Outline is the lightest at a documented ~512 MB (PostgreSQL). 2 of them publish official ARM64 images (Raspberry Pi / Apple Silicon).
| Tool | Health | Stars | Database | Min RAM | ARM/Pi | One-click | Updated |
|---|---|---|---|---|---|---|---|
| Outline
↗
Fast, beautiful team knowledge base with great search. |
97 Thriving |
39k★ TypeScript |
PostgreSQL | 512 MB | ✓ ● | — | today |
| BookStack
↗
Simple, organized wiki (books/chapters/pages) on LAMP. |
96 Thriving |
19k★ PHP |
MySQL/MariaDB | 1024 MB | ✗ ● | — | today MIT |
| Wiki.js
↗
Modern Node.js wiki with Markdown, Git sync and SSO. |
96 Thriving |
28k★ Vue |
PostgreSQL | 512 MB | ✓ ● | — | 1mo ago AGPL-3.0 |
FAQ
What is the best self-hostable Confluence alternative?
By the live Self-Host Health Score, Outline ranks highest (97/100).
Which open-source Confluence alternatives run on a Raspberry Pi?
Those publishing official ARM64 images: Outline, Wiki.js.
Which is the lightest on RAM?
Outline, at about 512 MB.